Comparison

Calccis vs Calculator T

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Calccis

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Calccis is a reverse polish notation (RPN) calculator. It supports basic arithmetic, trigonometrical, logarithm and exponent calculations for real, fractional, and complex numbers. Degrees and radians can be used for trigonometrical functions. You can perform matrix calculations, too. There is an undo stack, which supports undoing and redoing the 100 latest operations. Calccis does not copy or mimic any existing physical calculators. However, the operation of the stack has been influenced by how the stack works in the 1990s Hewlett-Packard HP-48 family of calculators.

About

Calculator T

This app offers advanced scientific calculation and unit conversion capabilities. It features a history tape, memory functions, and supports complex mathematical operations. It also includes currency exchange rates and a wide range of measurement conversions.

Highlights
  • Standard and scientific function modes
  • Extensive unit conversion (over 300 units)
  • History tape for last 100 records
  • Memory buttons (MS, M+, M-, MR, MC)
  • Copy/paste functionality for equations and results
  • Support for large number calculations and scientific notation
  • Currency exchange rate conversion
Features
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● Functional Features: 1. Supports standard and scientific function modes. 2. Supports many unit conversion. 3. Displays both the equation & the result. 4. History Tape View - the most recent 100 historical records are automatically saved on your device, you can get them when you open the APP next time. 5. Supports 5 memory buttons and multiple memory records: MS (M Save), M+, M-, MR (M Recall) and MC (Clear Memory), If you often use Windows calculators, then you should be familiar with them. ^_^ 6. Supports copying for both current input and historical records by tap & hold on it - you can copy the equation/expression or the result to the clipboard. 7. Supports pasting equation/expression into input box with robust expression parsing capabilities from the clipboard. 8. Supports long equation/expression input - maximum 1500 characters. 9. Supports insert the equation or result of the historical record into the input box by tap & hold on it. 10. Optimized the layout for iPad, designed with elegant, easy and intuitive interface. 11. Turn on the F-E button to force convert the result to E-notation (scientific notation). 12. When you press the equals button, the APP will automatically fill in any unclosed parentheses in the equation. 13. Supports Equals Repeat function - the APP will automatically repeat it if the last calculation is simple arithmetic operations (+, -, ×, ÷). 14. No ads. ● Math & ALGEBRA Features: 1. Supports 32-bit input precision & calculation precision, this means you can enter 32-bit integer or 32 decimal places. 2. Supports input of maximum scientific notation exponent "9999", eg. 999999E9999. 3. Supports big integer & rational number: For the factorial calculation of positive integer, up to 10000! (about 2.846E+35659). For the calculation result, maximum support 9.999E+99999999. 4. Support constants π, e. 5. Supports switching three angle units (RAD, DEG, GRAD), instead of applying it to the entire equation, we identify the unit of angle for each trigonometric function, so you get a clearer understanding of what the equation means. 6. Supports advanced calculations, including n!, ^, mod, √, log, ln, cube, square, cube root, y root, abs, ceil, random, floor and exponential functions etc. 7. Supports trigonometric functions (sin, cos, tan, asin, acos, atan) and hyperbolic functions (sinh, cosh, tanh, asinh, acosh, atanh). ● Unit Converter Features: 1. Supports multiple weight and measurement unit conversions - Volume, Length, Weight & Mass, Time, Energy, Area, Speed, Temperature, Power, Data, Pressure and Angle. 2. Supports currency exchange rate conversion (over 160 different currency units, and exchange rate data are hourly updated). 3. Supports 300+ Units. 4. Supports favorites function for quick conversions - allows setting 4 frequently used units for each conversion category. 5. We take the accuracy of conversion very seriously, and therefore, We had carefully verified the conversion values of each unit. Such as: when it comes to the electron-volt, many converters use different values, such as 1 eV = 1.60217656535E-19 J, 1 eV = 1.602176473E-19 J, and so on. However, we found that the CODATA 2018 recommended value (latest version) is 1 eV = 1.602176634E-19 J, so we use this latest recommended value. ● Multiple Languages: 1. English 2. Japanese 3. Chinese If you’re using an iPad or iPhone, you can enjoy the Calculator T application, hope it can assist you with your studies and work. If you find it useful, please consider supporting us by leaving a positive review and sharing your suggestions. Thanks :)

Screenshots

Calccis3 screens
Calculator T4 screens

Verdict

The call

The clearest difference is update cadence: Calculator T at every 2 days against Calccis's every 3 weeks. Calculator T also leads on iOS requirement (11.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Calccis ships an update every 3 weeks, Calculator T every 2 days. The most recent releases landed on October 24, 2026 and October 19, 2026 respectively.

Scorecard2 real differences · 8 level
Calccis versus Calculator T: the parameters behind the verdict, then further details
ParameterCalccisCalculator T
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews—100.0% of reviews
Number of ratings1 — better—
Update frequencyEvery 3 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.611.0 — better
Further details — not scored
Size1 MB16 MB
Age rating4+4+
DeveloperJukka AittolaXiao Hou Yi Sheng Traditional Chinese Medicine Technology (Shenzhen) Co., Ltd

In-app purchases

None

Calccis

No in-app purchases

None

Calculator T

No in-app purchases

Questions

Is Calccis free?
Calccis is free to download, with no in-app purchases.
Is Calculator T free?
Calculator T is free to download, with no in-app purchases.
Do Calccis or Calculator T have ads?
Neither Calccis nor Calculator T shows ads.
Which is updated more often, Calccis or Calculator T?
Calccis ships an update every 3 weeks, and Calculator T every 2 days. Most recently, Calccis was updated on October 24, 2026 and Calculator T on October 19, 2026.

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